如何处理 Spring MVC 中的静态内容? [英] How to handle static content in Spring MVC?

问题描述

我正在使用 Spring MVC 3 开发 web 应用程序，并让 DispatcherServlet 像这样 (web.xml) 捕获所有对/"的请求:

I am developing a webapp using Spring MVC 3 and have the DispatcherServlet catching all requests to '/' like so (web.xml):

  <servlet>
    <servlet-name>app</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  </servlet>

  <servlet-mapping>
    <servlet-name>app</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

现在这就像宣传的那样，但是我如何处理静态内容?以前，在使用 RESTful URL 之前，例如我会捕获所有 *.html 并将其发送到 DispatcherServlet，但现在这是一个不同的球赛.

Now this works as advertised, however how can I handle static content? Previously, before using RESTful URLs, I would have caught all *.html for example and sent that to the DispatcherServlet, but now it's a different ball game.

我有一个/static/文件夹，其中包括/styles/、/js/、/images/等，我想从 DispatcherServlet 中排除/static/*.

I have a /static/ folder which includes /styles/, /js/, /images/ etc and I would like to exclude /static/* from the DispatcherServlet.

现在，当我这样做时，我可以让静态资源工作:

Now I could get static resources working when I did this:

  <servlet-mapping>
    <servlet-name>app</servlet-name>
    <url-pattern>/app/</url-pattern>
  </servlet-mapping>

但我希望它有漂亮的 URL(我使用 Spring MVC 3 的重点)而不是登陆页面 www.domain.com/app/

But I want it to have nice URLs (the point of me using Spring MVC 3) not the landing page being www.domain.com/app/

我也不想要一个与 tomcat 或任何其他 servlet 容器耦合的解决方案，并且因为这是(相对)低流量我不需要前端的网络服务器(如 apache httpd).

I also don't want a solution coupled to tomcat or any other servlet container, and because this is (relatively) low traffic I don't need a webserver (like apache httpd) infront.

有没有干净的解决方案?

Is there a clean solution to this?

推荐答案

因为我在这个问题上花了很多时间，所以我想我会分享我的解决方案.从 spring 3.0.4 开始，有一个名为 <mvc:resources/> 的配置参数(更多关于 参考文档网站)，可用于提供静态资源，同时仍在您站点的根目录上使用 DispatchServlet.

Since I spent a lot of time on this issue, I thought I'd share my solution. Since spring 3.0.4, there is a configuration parameter that is called <mvc:resources/> (more about that on the reference documentation website) which can be used to serve static resources while still using the DispatchServlet on your site's root.

为了使用它，请使用如下所示的目录结构:

In order to use this, use a directory structure that looks like the following:

src/
 springmvc/
  web/
   MyController.java
WebContent/
  resources/
   img/
    image.jpg
  WEB-INF/
    jsp/
      index.jsp
    web.xml
    springmvc-servlet.xml

文件内容应如下所示:

src/springmvc/web/HelloWorldController.java:

src/springmvc/web/HelloWorldController.java:

package springmvc.web;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class HelloWorldController {
 
 @RequestMapping(value="/")
 public String index() {
  return "index";
 }
}

WebContent/WEB-INF/web.xml:

WebContent/WEB-INF/web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
         http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

 <servlet>
  <servlet-name>springmvc</servlet-name>
  <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  <load-on-startup>1</load-on-startup>
 </servlet>

 <servlet-mapping>
  <servlet-name>springmvc</servlet-name>
  <url-pattern>/</url-pattern>
 </servlet-mapping>
</web-app>

WebContent/WEB-INF/springmvc-servlet.xml:

WebContent/WEB-INF/springmvc-servlet.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
 xmlns:mvc="http://www.springframework.org/schema/mvc"
 xsi:schemaLocation="http://www.springframework.org/schema/beans
 http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
 http://www.springframework.org/schema/mvc
 http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
 http://www.springframework.org/schema/context
 http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <!-- not strictly necessary for this example, but still useful, see http://static.springsource.org/spring/docs/3.0.x/spring-framework-reference/html/mvc.html#mvc-ann-controller for more information -->
 <context:component-scan base-package="springmvc.web" />

    <!-- the mvc resources tag does the magic -->
 <mvc:resources mapping="/resources/**" location="/resources/" />

    <!-- also add the following beans to get rid of some exceptions -->
 <bean      class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />
 <bean
class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping">
 </bean>

    <!-- JSTL resolver -->
 <bean id="viewResolver"
  class="org.springframework.web.servlet.view.InternalResourceViewResolver">
  <property name="viewClass"
   value="org.springframework.web.servlet.view.JstlView" />
  <property name="prefix" value="/WEB-INF/jsp/" />
  <property name="suffix" value=".jsp" />
 </bean>

</beans>

WebContent/jsp/index.jsp:

WebContent/jsp/index.jsp:

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<h1>Page with image</h1>
<!-- use c:url to get the correct absolute path -->
<img src="<c:url value="/resources/img/image.jpg" />" />

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